American Liquipel waterproof technique,waterproof lever is IP4.You put it into water,after 5 minutes,take it out,you can still use it.(not include swimming water,shower water)

Ergonomics earphones,bring your comfortable enjoyment.

iPhone bluetooth battery display.

When you connect the bluetooth earphone with your phone,please press power button for 3 seconds,the blue light flashs,then keep pressing the power button for a more 3 seconds.When you hear a voice "pairing"and the light shows blue color,you can connect it with your phone.